settings: add GetDelimiter(), GetMinimum() and GetMaximum() to CSettingList
settings: add GetSections() to CSettingsManager
settings: add GetSections() wrapper to CSettings
settings: add static ListToValue helper method to CSettings
jsonrpc: add support for reading and writing settings
[win32] update VS project files
[xcode] adds new files to xcode project
Merge pull request #3521 from Montellese/jsonrpc_settings

jsonrpc: basic settings exposure